Rotor hub for wind turbines



2.1 is a front view;

2.2 is a right side view;

2.3 is a back view;

2.4 is a top view;

2.5 is a top front isometric view; and

2.6 is a top back isometric view. 

CLAIM The ornamental design for a rotor hub for wind turbines, as shown and described. 